body, html
  line-height: 1
  font-weight: 200
  font-family: 'PingFang SC', 'STHeitiSC-Light'
  color rgb(7,17,27)
.clearfix
  &:after
    content: ".";
    display: block;
    height: 0;
    clear: both;
    visibility: hidden;

@media (-webkit-min-device-pixel-ratio: 1.5),(min-device-pixel-ratio: 1.5)
  .border-1px {
    &::after, &::before {
      -webkit-transform: scaleY(0.7)
      transform: scaleY(0.7)
    }
  }
  .border-1px-x {
    &::after, &::before {
      -webkit-transform: scaleX(0.7)
      transform: scaleX(0.7)
    }
  }


@media (-webkit-min-device-pixel-ratio: 2),(min-device-pixel-ratio: 2)
  .border-1px {
    &::after, &::before {
      -webkit-transform: scale(0.5)
      transform: scaleY(0.5)
    }
  }
  .border-1px-x {
    &::after, &::before {
      -webkit-transform: scaleX(0.5)
      transform: scaleX(0.5)
    }
  }
